Declension table of ?mantrakāla

Masculine	Singular	Dual	Plural
Nominative	mantrakālaḥ	mantrakālau	mantrakālāḥ
Vocative	mantrakāla	mantrakālau	mantrakālāḥ
Accusative	mantrakālam	mantrakālau	mantrakālān
Instrumental	mantrakālena	mantrakālābhyām	mantrakālaiḥ mantrakālebhiḥ
Dative	mantrakālāya	mantrakālābhyām	mantrakālebhyaḥ
Ablative	mantrakālāt	mantrakālābhyām	mantrakālebhyaḥ
Genitive	mantrakālasya	mantrakālayoḥ	mantrakālānām
Locative	mantrakāle	mantrakālayoḥ	mantrakāleṣu

Compound mantrakāla -

Adverb -mantrakālam -mantrakālāt